• Auxiliary verbs add functional or grammatical meaning to the clause in which they are used. They provide the main semantic content of the clause. The positive, negative or interrogative function of sentences are also defined by these auxiliary verbs.

schlechte horror spiele den der ler sidst ler bedst LIST OF AUXILIARY VERBS:

ruby laser autonivel there BE                  : am, is, are, was, were, been, being

DO                  : do, does, did

HAVE             : have, has, had

MODALS      : must, will, would, can, could, may, might, shall, should, need, ought to


  • In sentences constructed in present simple and past simple tenses, we cannot use any auxiliary verbs. Negative and interrogative sentences can be used with the auxiliary verbs “do”, “does” and “did.”

Present simple tense:

I live in Turkey.

I don’t live in Turkey.

Do you live in Turkey?


Past simple tense:

They played football yesterday.

They didn’t play football yesterday.

Did they play football yesterday?


  • “Do”, “does” and “did” can be used as regular verbs as well.

I do housework on Sundays.

I don’t do housework on Sundays.

They did shopping yesterday.

They didn’t do shopping yesterday.


  • For all perfect tenses, we have to use V3 (gone, written, played, etc.) after the auxiliary verb (have, has, had)

He’s gone abroad.


  • For all continuous tenses, we use the form “be + V-ing”


He IS readING a book.

He WAS readING a book.

He has BEEN readING a book.

He had BEEN readING a book.

He will BE readING a book.


  • Please compare the use of verbs in the following sentences:

I play football.                                  (Correct: present simple)

I am playing football.                     (Correct: present continuous)

I playing football.                            (Wrong: no such tense)

I am play football.                           (Wrong: no such tense)



  • For all modals (will, must, should, etc.) the verbs must be in simple form.

You must go .                    (correct)

You must to go.               (wrong)

You must going .              (wrong)